My top level categories are `inbox` (stuff that isn't sorted yet), `Media` (stuff that other people made), and `Vault` (stuff that I made).
`Media` contains `Audiobooks`, `Books`, `Courses`, `Films`, `TV`, `Music`, and `Broadway.
`Vault` contains `Backups`, `Projects`, `Audio`, Video`, and `Photos`.
Anything one layer deeper is either a file of the type described by the parent folder name or a folder containing related files (ex: `Video/2023-06-12 makers.dev 119` is a folder containing the raw recordings and processed end video and audio for my podcast).
I've got about 10TB and tens of millions of files organized in this system. It works better than anything else I've tried.